History of the Peloponnesian War

The next day Nicias, with the one half of the army, marched to the confines and wasted the territory of the Scionaeans; and Nicostratus at the same time, with the other half, sat down against the city before the higher gates towards Potidaea.

Polydamidas (for it fell out that the Mendaeans and their aids had their arms lying within the wall in this part) set his men in order for the battle and encouraged the Mendaeans to make a sally.

But when one of the faction of the commons in sedition said, to the contrary, that they would not go out and that it was not necessary to fight, and was upon this contradiction by Polydamidas pulled and molested, the commons in passion presently took up their arms and made towards the Peloponnesians and such other with them as were of the contrary faction;